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Maintenance
1
2
1
Tyre sidewall labeling
This
information
identifies
describes the fundamental charac-
teristics of the tyre and also provides
the tyre identification number (TIN)
for safety standard certification. The
TIN can be used to identify the tyre in
case of a recall.
1. Manufacturer or brand name
Manufacturer or Brand name is
shown.
7
46
2. tyre size designation
A tyre's sidewall is marked with a tyre
5,6
size designation. You will need this
information when selecting replace-
7
ment tyres for your car. The following
explains what the letters and num-
4
bers in the tyre size designation
mean.
Example tyre size designation:
3
(These numbers are provided as an
example only; your tyre size designa-
I030B04JM
tor could vary depending on your
vehicle.)
175/50R15 75H
and
175 - tyre width in millimeters.
50 - Aspect ratio. The tyre's section
height as a percentage of its
width.
R - tyre construction code (Radial).
15 - Rim diameter in inches.
75 - Load Index, a numerical code
associated with the maximum
load the tyre can carry.
- Speed Rating Symbol. See the
H
speed rating chart in this section
for additional information.
Wheel size designation
Wheels are also marked with impor-
tant information that you need if you
ever have to replace one. The follow-
ing explains what the letters and
numbers in the wheel size designa-
tion mean.
Example wheel size designation:
5.5JX15
5.5 - Rim width in inches.
J - Rim contour designation.
15 - Rim diameter in inches.
Tyre speed ratings
The chart below lists many of the dif-
ferent speed ratings currently being
used for passenger car tyres. The
speed rating is part of the tyre size
designation on the sidewall of the
tyre. This symbol corresponds to that
tyre's designed maximum safe oper-
ating speed.
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